Water-supply system



l. H. VAILE.

WATER SUPPLY SYSTEM.

APPLICATION FILED 00Tc 2l, |9111.

Pawn@ Jan. 11,1921.

UNITE-D STATES PATENT QFFICE.

THE yALn-Krlsins MPANY,

or OHIO.

WATER-ASPPLY SYSTEM.

Y y i Specification of Letters Patent.

` Patented Jan. 11, 1921.

piic'a'tion ined etobr 21, iei. serial No. 259,054.

To all wlan/m t may concern.' y,

Beit known thatI, Jenin' Varian, a citizen of the UnitedStates,vand'residing at Dayton, in the countyl of, Montgomery and Stateof Ohio,have Vinvented a new and useful Improvement .in ylaterSupply `Systems,of which the following" speCihCatin is a full disclosure. y Y

The invention relatesy particulerly.V to` a domestic water servicesystem wherein, the water from a `station supply source is pumped intoaL compression tank discharged from the-` service outlet under thepressure maintained in theJ s In such systems to Inaintainthe water inthe compression ktank in a Vforni, `it :is necessary to keep aheadfofunder pressure above ythe water in `the. tank, r,and the air supplyAmust be Areplle.I iishedfrom time to timey to prevent the7 tanklfr'ombecoming water-loggeda air, under, aprevailing practi'ce `is thrnughvthe water piunp,,sothaty when `the puinpilis in operation both airaiidfivater isA delivered to the tank. .o adapt ythe.'puinp to servesaid dual capacity, .it ,is providedwith a valve controll'edair inlet'port so that the piston in1 onest'roke1 onV ,its suction` side draws aquantity of air into tliepunip cylinder, and'with an, bpposite strokeforces the air with tliewateij, into ythe tank.V 2It howevei, has beenexperienced ,that the xair will pocket. the pipe connecting the pump andtank, at a point or vpointsin the pipe whichare at higher alcwation,4than the inlet port ,of the tankandastheair fis conipre'ssible andelastic, it will be coiiliiied and accumulatedat such,p9in ts,rformiiigan impediment iiif,such connectiom resulting in a reduction of thepipe,(capacity,and the imparting v'of a, counterfinluence ,against thepump, desfase ifs. ecizeincyan @faemittedwill destroy the utility` ofthlegsystem. l Itis thereforeanobjectfo theinv'ent n to rf vid a'Supplement Sfieeen ,be Ween the and tanlnta'f'r 'ng wor connecting withthe water. man, ciI nectingk therlpump andtank, `con'1'I'i1u"`r;1'icating with` the main at any .point labove the rtank inletwflierethelair iSaptt pocket oraccduiniilat and thereby establish adirectconstantlyL ulrivv. lfd ,course intoy the tank ifor theaiitoescape from said Another. @bien is to. prende. upennnection between awater pump and compres- I end of sion tank as an y v n u ascending airpassage for conveying any air delivered from the pump linto thetank andhaving said pipe connected with the tank through the water levelgagie'of the tank for observation purposes. I, Other objects andfeatures relate to details of construction and arrangement of parts allfully revealed in the following description of the accompanyingdrawings, forming a part of 4this specification, the drawingsillustrating a preferred arrangement, with like characters of referencedenoting corresponding parts throughout the several views, of which: s

Figure 1 isa side elevation of a portion of water pump and compressiontank connected by water and conveying pipes to 'produce the. resultssought by the invention. l* ig. 2 Ais, anenlarged central vertical sec*ofthe check ,valve interposed. in the piping connecting the pump' andtank.

,eferring ,tok vpump 4whichnuiy be of any commercial type 'or design,but preferably possessing the features disclosed in Patent No.1,166,224, dated Dec. 28, `1915 which provides for thevescape of airfrom the pump cylinder intothe discharge chamber, so as to prevent thepump from becoming airbound. vvAn air inlet attachment or vairintakevalve 2 fixed to or forminga partvof the heador cap at one u y thecylinder provides a valve controlledlport for admitting air into thecylinder during asuctionstroke of the piston and delivering the air withthe water to the storage tank to preventthe system becomingWater-'loseed y'lhe details of the pump and air attachment are4 wellknownto. those skilled in kthe art,V so thata specific illustration anddescription need not bemade herein. A pipe orwater main 3 at one endconnects with the k discharge of the pump and at its opposite end withthe compression tank 4. The water main usuallyis Jformed or' a number ofpipe sections and elbow pipe fittings to coni'ormi tQan upwardlylextended loop ybetween, the: pump and l tank inlet especially whenthepump and tank have the same base elevation, 1This, however, is but onecomi "rin for making a pump and tank connectin: for; ,maintainingwater-tight joints, accommodating for the contraction and eX- and which,.isused, merely asian example' of a general installation, enabling thedrawings, 1 indicates a ioo a clearer umlerstanding of the presentinvention. This ferm or' connection presents a horizontal section otpiping higher than the elevation of the tank inlet, in which air maypocket and accumulate. ris air is compressible and elastic, it has beenexperienced that in time it will collect a quantity ot air at such highpoints sui'licient to materially interfere with the capacity ot the mainand impart a counter-pressure against the pump, reducing the etliciencyot' the pump.

is the pumps in an automatic system are usually driven by an electric orwater motor under automatic control governed by a delinite high and lowdegree ot tank pressure, it will be readily recognized that a pumpoperating against such an abnormal condition, exerts a heavy startingload to the motor and may impose a load injurious to the motor.

The main 3 has a check valve 5 interposed therein, which, in thepreferred consti-ration shown, comprises a valve casing interiorlydivided into an inlet chamber 6 and a discharge chamber T, i, 7ith avalve S for closing the port 9 connecting such chambers. A stem 10projects from one side of the valve S, carrying a piston 11 at its endsliding within the cylindrical extension 12 of the casing, providing adash-pot for the retreat or closing stroke of the valve. 'lhe piston hasa port 13 therethrough to provide a passage ltor the escape ot the iiuidin the chamber termed between the piston and plug- 14, closing thecylindrical extension 12 of the casing. A. piston 15, til-:ed to theopposite side ot the valve S, slides in the cylinder lormed by the wallsof the valve casing ior 'etarding the opening movement ot the valve`rllhe cylinder for the piston 15 is sealed by a cap or plug 16 screwthreaded into the casing. A. spring 1T is interposed between the piston15 and plug 16 for applying a closing pressure to the valve. The wallforming the cylinder for the piston 15 is provided with a porttherethrough communicating with the chamber formed between said piston15 and plug 16 and the outlet chamber 7. TWith the valve thus guided atits opposite sides, it is given more stability, and with its motionslightly retarded in either direction, it will not be abruptly openedand closed with the pump pulsations, so that its operation will berendered noiseless.

ln a system of this class any knocking or hammering of the valves ismaterially amplified and transmitted through the piping to variouspoints where the fixtures are located, making the same veryobjectionable.

The chamber G, at the pump side oi the check valve 8, is arranged toprovide a downward course tor the tlowing water betore it passes throughthe valve port. This will cause the air delivered from the pump to betrapped at the upper portion of the chamber fo', and at which point thechamber is in direct communication with the compression tank through anupwardly extended pipe or tubing 19. The pipe 19 has a shutoli valve 2Oand a check valve 21 interposed therein, preferably located at the inletend thereof, and its opposite end connected with the compression tankthrough the base tittmg 22 of the water level gage 23, and preierablyentends slightly upward into the gage glass, so that the air can passupward through the gage glass or tube and through the top gage iittinginto the compression tank. Connecting the air conveying pipe 19 with thewater level. gage is ot aid tor observation purposes when the water inthe tankis above the level ora the end ci the pipe 1E), as the air canbe observed passing upwardly in bubbles through the water in the gagetube, so that it can be readily determined whether any air beingdelivered into the tank. The pipe 19 therefore provides a direct upwardescape ot all air delivered into the water main, and which will travelupwardly under its specific gravity "t unobstructed in such course.

Having described my invention, l claim 1. A water supply system,combining a compression tank ior receiving and supplying water underpressure to the place ot utilization, a combined water and air pump inservice connection with said tank, and a pipe for air trapped in thesystem, connecting said pump in a constant ascending course with thetank whereby air trapped in the system Hows into the compression tank.

2. A water supply system combining a compression tank tor receiving andsupplying water under pressure to the place ot utilization, a pumpingapparatus, a main pipe connecting said pumping apparatus and tank, and abranch pipe line connecting at one end with said pipe at a highelevation point thereof, and at its opposite end with said tankproviding a constantly ascending air conveying passage between the pumpand tank.

3. A water supply system, combining a compression tank 'for receivingand supplying water under pressure to the place oi' utilization, a pumpconnecting with said tank for supplying water thereto, a check valveinterposed in the pump and tank connection, providing a chamber 0n thepump side of the valve, and a pipe connecting with said tank and saidchamber tor conveying air from said chamber into the tank.

e. A water supply system combining a compression tank having a glasswater level gage disposed to gage a normal water level to be maintainedin said tank, a pump in service connection with said tank below thewater level gage, a check valve interposed between the pump and tankconnection, having a chamber at the pump side of the valve, and a pipeconnecting said chamber and tank through the water level gage.

5. in a device of the nature disclosed, a pump and a water servicepressure tank, a water connecting' conduit therefor, an independentmeans for conveying trapped air from said conduit and discharging itinto the pressure tank, whereby the pump forces both water and air intothe tank at diierent points, preventing air, opposing to the water iow,from accumulating in said conduit.

6. ln a device of the nature disclosed, a pump and a water servicepressure tank, a water connecting conduit therefor, a second conduitconnecting' said pump and tank in a constantly ascending course from thepump into the tank and having communication with the water connectingconduit, whereby the pump forces both water and air at different pointsinto the tank, preventing air, opposing the water flow, fromaccumulat-ing in said first-named conduit and permitting its passagethrough said second con duit.

T. A water supply system combining a compression tank for receivingandvsupplying water under pressure to the place oi' utilization, apumping apparatus, a main pipe connecting said pumping` apparatus andtank, and a branch pipe line communicating at one end with said pumpingapparatus for conveying air trapped in said system, and at its oppositeend connected with said tank, and providing a constantly ascending airconveying passage between 'the pump and tank.

8. ln a device of the nature disclosed, a pump and a water servicepressure tank, a water connecting conduit thereiior, an independentmeans for conveying' trapped air from said conduit and discharging itinto the pressure tank, and a water check valve between said airconveying means and the tank, whereby the pump forces both Water and airinto the tank at diiqerent points, preventing air, opposing to the wateriow, from accumulating in said conduit.

In witness whereof, l hereunto subscribe my naine, as attested by thetwo subscribing witnesses.

J. HENRY VAILE.

Witnesses Jos. NANN, R. L. TANsEL.

